Zinc dust
Zinc dust, powders and flakes: > Zinc dust
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 7903.10.00.00
Zinc Dust for Rubber Vulcanization
High-purity zinc dust produced by condensation of zinc vapor, featuring spherical particles finer than 63 microns, used as an activator in rubber vulcanization processes. It meets Chapter 79 definitions with over 85% metallic zinc content and at least 80% passing a 63-micron sieve. Classified under HTS 7903.10.00.00 as zinc dust due to its production method and particle characteristics.
Metallurgical Grade Zinc Dust
Spherical zinc dust from vapor condensation, with 90%+ metallic zinc purity and particle size predominantly under 63 microns, applied in metallurgy for alloying and surface coating. It strictly adheres to HTS 7903.10.00.00 criteria as defined in subheading note (c) for zinc dust.
Zinc Dust for Chemical Precipitations
Ultra-fine zinc dust, condensed from vapor with spherical particles where 85% pass 63-micron mesh and containing 88% metallic zinc, used in chemical reactions for precipitating metals from solutions. Falls under 7903.10.00.00 per official definition distinguishing it from coarser powders.
Paint Grade Zinc Dust
Fine spherical zinc dust from zinc vapor condensation, 92% metallic zinc with 90% particles below 63 microns, essential for anti-corrosive primers and metallic paints. Precisely matches HTS 7903.10.00.00 zinc dust definition excluding alloys or coarser powders.
Pharmaceutical Zinc Dust USP Grade
Ultra-pure zinc dust meeting USP standards, produced via vapor condensation with >97% metallic zinc and particles 80%+ through 63-micron sieve, used in pharmaceutical ointments and topical preparations. Classified as zinc dust under HTS 7903.10.00.00 based on physical form and chapter notes.
Electronics Sintering Zinc Dust
High-fineness zinc dust from vapor process, 86% metallic zinc with spherical particles averaging 10-20 microns (all passing 63-micron), used in electronics for sintering conductive pastes. Meets exact criteria of HTS 7903.10.00.00 subheading note (c) for zinc dust.
Anti-Corrosion Zinc Dust Primer Additive
Industrial zinc dust specifically for epoxy primers, condensed from vapor with 89% Zn content and 82% particles under 63 microns per sieve analysis. HTS 7903.10.00.00 applies as pure zinc dust per chapter definitions, prior to paint mixing.
Surface Treatment Zinc Dust
Fine zinc dust for metal surface passivation and galvanizing activation, featuring vapor-condensed spherical particles (85% <63 μm) and 91% metallic zinc purity. Directly classified under 7903.10.00.00 as zinc dust distinct from powders.
Battery Manufacturing Zinc Dust
Specialty zinc dust for alkaline battery electrode preparation, vapor-condensed with 87% Zn and particle distribution ensuring 80% passage through 63-micron sieve. HTS 7903.10.00.00 per precise chapter note (c) specs for dust.
Pyrotechnic Zinc Dust
Reactive zinc dust from zinc vapor, ultra-fine spherical particles (95% <63 μm) with 93% metallic zinc, used in pyrotechnics for flash effects and fuels. Satisfies all HTS 7903.10.00.00 criteria including production method and sieve passage.
Flame Retardant Zinc Dust Filler
Zinc dust acting as synergist in intumescent flame retardants for polymers, vapor-produced with 85% min Zn and 80% particles through 63-micron mesh. Pure form qualifies under HTS 7903.10.00.00 zinc dust definition.
Galvanizing Flux Zinc Dust
Fine zinc dust for hot-dip galvanizing flux formulations, condensed vapor particles all <50 microns with 90% metallic zinc content. Meets HTS 7903.10.00.00 exact specs for sieve and purity.
Cosmetics Micronized Zinc Dust
Pharma-cosmetic grade zinc dust, vapor condensed spheres <20 microns average (99% <63 μm), 98% pure metallic zinc for pigment-free cosmetics. Classed HTS 7903.10.00.00 as qualifying zinc dust.
3D Printing Zinc Dust Feedstock
Ultra-fine spherical zinc dust optimized for metal 3D printing powder bed fusion, vapor process with tight PSD 15-45μm (all <63μm sieve), 99.5% Zn purity. HTS 7903.10.00.00 due to dust definition match.
Catalyst Activation Zinc Dust
Reactive zinc dust for activating hydrogenation catalysts in pharma/chemical synthesis, vapor-condensed <10μm spheres, 96% metallic Zn meeting all 7903.10.00.00 sieve/purity notes.